All computers (Macs included) require RAM (Random Access Memory) to operate. RAM is important because it helps a computer process large files faster and more efficiently. Apple has a reputation for putting its computers on retail shelves with the minimum amount of installed RAM, but the company makes it fairly easy (in most cases) to add more. Different Mac models use different configurations of RAM chips. Unlike a hard drive, RAM is volatile memory, which means that any data stored on it is lost upon powering down.

Step 1

Power down your Mac, remove all cables and allow it to cool for at least 20 minutes before installing the new RAM.

Step 2

Place your iMac screen down on a towel or other soft cloth to avoid scratching the screen. Remove the plate on the underside of the computer (the part that faces the desk when the computer is upright) using a Phillips screwdriver. Pull on the plastic tab to eject the RAM chip. Install a new chip by lining it up with the slot and pressing firmly to ensure that it's properly seated. Replace the plate, reattach all cables and boot up.

Step 3

Identify which model MacBook you have. Depending on the model, you may have to remove the entire bottom panel or just the battery and the "L Bracket" that lines the inside of the battery compartment. Remove any RAM chip you want to replace and insert the new one, confirming that it's properly seated. Replace the casing and reboot. Some older MacBook Pro models house the RAM under a removable panel next to the battery compartment; here, you simply remove the battery to remove the "memory door" to access the RAM.

Step 4

Disengage the lever on the back of the Mac Pro to release the side panel. Remove the side panel and place it to the side. The memory is mounted on the Processor Tray, the removable component at the bottom of the unit. Unlatch the tray and pull it toward you to remove it. Insert the RAM chips into the proper sockets and replace the tray, ensuring that you have refastened the latches. Replace the side panel and reboot the Mac.

Tip

RAM prices tend to vary greatly among different sellers.

You can sell the RAM chips that you have removed from your Mac to a used computer dealer.

Resources

About the Author

Christopher Capelle is a freelance copywriter with over two decades of experience. Subjects of his writing include the business and technology fields, consumer products and home repair/improvement. He graduated from The University of Connecticut and earned a master's degree in journalism from Iona College.